Coffee urn



Feb. 9 192s. 1,572,221

w. H. PETERSEN COFFEE URN Filed August 1. 1925 s sheets-sheet 1 IHHICIHIH.

Patented Feb. 9, 1926.

UNITED STATES PATENT OFFICE- WILLIAM H. PETERSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO ALBERT PICK & COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.-

COFFEE URN.

Application meanugust 1, i923. serial no. 654,998. l`

To all whom t may concern.'

Be it known that I, WILLIAM H. PnTnRsnN, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in l Coffee Urns, of which the following is a full, clear, and exact description. n

The invention relates to coffee urns and its object is to provide an `improved construction in which the outlet pipe from the coffee jar or receptacle is readily removable from the air-chamber in which the jar is retained; in which provision is made for spreading the spray of water over all portions of the filter; in which separate conjointly operable valves are provided 'for the water supply and overflow; and as will more fully appear from the following description.

The invention consists in the several novel features hereinafterset forth and m'ore particularly defined by claims at the conclusion hereof. Y

In the drawings: Fig. 1 is a vertical section of an urn embodying the invention. Fig. 2 is a horizontal section taken on line QL) of Fig. 1. v Fig. 3 is a vertical section on line 3--3 of Fig. 1." Fig. 4 is a side elevation of the lower portion of the urn. Fig. 5 is a detail-of the connections for eX- hausting steam from the water chamber. Fig. Sis a detail of the safety valve in said exhaust steam connection. Fig. 7 is a perspective of the handle for operating the water supply and overflow valves.

The invention is exemplified in an urn comprising a cylindrical body 8 provided with a bottom 9 in which is formed a chamber 10 for the water to be percolated through the coffee. The body 8 is suitably supported by legs 11. An inner cylindrical wall 12 is joined to the body 8 by an annular horizontal wall 13 and forms an air chamber 14. A jar or receptacle 15 is adapted to contain the liquid coffee. This ar is removably held in chamber 14, being provided with a ledge lkwhich is adapted to rest on wall 13. and is provided with an upwardly extending wall 17 which extends over the rim of the body 8. A percolator is removably supported above the coffee jar and comprises l an imperforate cylindrical'side wall'18 and a foraminous bottom 19. The top of the percolator is open and `its lower end rests on the ledge 16 of the jar l5. The latter is provided with a verticallyextending portion 20 to confine the h'percolator laterally over the A sheet 21 of iilter medium, such as suitable paper, is placed on the bottom of the peroolator. A foraminous disk 23, fixed to a ring 24, is removably held over the filter Asheet and in spaced `relation therefrom to prevent the water fromV becoming nsprayed through the sheet.` Ring 24 and disk 23 are removable from thepercolator to permit replacement of the sheetA and the percolator to be cleaned. Handles 25 are 'fixed to ring 24, extendupwardly to a point adjacent the upper rim of percolator 18 and are provided Vwith hooks 26 whereby the ring may be readily lifted from the percolator. A removable cover 27 rests onthe rim of body 8 and extends over the percolator and top of jar 15. This cover is provided with a handle 28 for convenience in removal and replacement thereof and its lower rim rests on the rim of jar 15. A

A. water supply pipe 30 is connected'to a plug valve 31 and a ,pipe 32 delivers water.

from valve 31 into thewater chamber 10. The urn is designed todeliver a predetere mined volume of water from chamber 10 into the percolator and to vmeasure the water,

and overflow pipe 33 has its open upper end located at the proper point for this purpose. This overflow pipe extends downwardly through the bottom 9 and is connected to a plug valve 34. The stems'35 of valves 31 and 34 are separate from one another and co-axial. A handle 36 is provided with va groove 37'which is adapted to fit around.

the stems of both of the valves 31 and 34 so that they will be conjointly operated tor a suitable coupling` 41 to thebottoin of theV coffee iar L15 to conduct the coiee to a pair of faucets 42. l Each of said faucets has a nipple 43 which is threaded toV one of the pipes 40. A sight glass 44 is connected to said faiicet, as well understood inthe art, to indicate the level of the coffee in the jar. In practice,l it is desirable to extend Ithe air chamber 14 around pipes 40, toprevent the coffeerinv the pipe from being cooled as when cold water isV introduced` into the waterlchamber l0, theair-chamber serving as insulating means around the'jar l5 and pipes 40. Vln practice, it occasionally becomes necessary to cleanout pipes 40 or inend their connections. `To make it possible to remove the pipes 40 with the coffee-jar, the space 14 is extended downwardly to form a depressed portion i4, thetop of which is open tc the chamber 14 and channels 14b and 146,'which communicate rwith .space 14ak extend outwardly around pipes 40 to form air spaces around the'outer ends of said pipes. Vhen theffaucets 42 are uncoupled :from pipes 40 and the jai: is uncou'pledat4l, the j ar can be lifted out of chamber 14 and these pipes can be readily removed. This featuremakes it possible'to obtain ready access to pipes 40 and to remove the jar without disturbing any ofk the connections between pipe40 and the jar. Y'

A drain 45 connects with thelower portion of the wall around the space 14a to discharge condensation from the lair-chariiber 14. A drain-cock 45a is connected to vthe vbottom 9. A water faucet 45b is also connected to the water chamber l0, so that hot` water may be drawntherefrom at will. Any

suitable heater, such as a coil of steam pipe in the lower portion of chamber lO or a gas Vburner under bottom 9, as well uncerstood in' the art, may be used to bring the temperature of the water in chamber l0 to the boiling point or desired temperature.

A pipe 46, having its lower end open and disposed adjacent the bottom 9 of chamber 10, extends upwardlyto a valve 47., The water for making codee rises through said pipe and an elbow-pipe 48, which is swiveled on the upper end of pipe 46. A stop-pin 49 on pipe 4% limits vits rotation, s o that when it is swung in one direction, a rosette sprayer 50, secured to. the inner i' end of said pipe, will be centrally positionedover the percolater. Sprayer 50 comprises a hollow body 5l and a convex cover 52 screw-threaded to the body and provided with perforations 53 therein which are arranged to divide the water into a spray which will be divided to reach substantially the entire area of the percolator. Pipe 48 is held by gravity on the upper end ofpipe 46, so that it can be easily removed when desired, as well as swung laterally so the sprayer will be outside of the body 8.

A pressure-relief pipeA 56 is connected to body 8 above the water line and an automatic` safety valve 57 is vertically slidable in a casing 58 connected to the upper end of pipe 56. Afpipe 59 extends downwardly from casing`58 and is openat its lower end so thatv when the pressure in the chamber 10 becomes excessive, it willlift valve 57 and escape through pipe r59. A spring seatedvalve 60 is provided in valve 57 to prevent the formation of vacuum pressure in chamber 10. A valve 61 is included in a. bypass 62 between pipes 56 and 59, so that the chamber l0 may be left open to 'atmosphere to prevent the accumulation of pressure andin- `crustation thereiin'said valve being left open except'whi'e coffee is 'being made. This provides a construction in which the chamber 1.0 may bc kept lopen to atmosphereto relieve the walls of the urn of pressuremand -the strains incident thereto, except while water in chamber l0 is being heated and being siphoned into the percolator. i

lThe invention 'exemplifies an improved coffee `urn in which the'coifee jar, with its -pipe leads for the faucets, may be easily removed for repair; in which separate conjointly 'operable valves kare usedy for the water supplyand over'iiow and which makes it possible to individually repair either valve 'with-cut disturbing the other; and in which provision is made for spreading the spray of water overy the entire percolator.

The invention is not-'to be understood as restricted to the details set forth, since these may be modiiied within the scope of the appended claims, without departing from the spirit and scope of the invention. 1

Having thus described the invention, 4what claim as new and desire tov secure by Letters Patent, is: a

l. In a coffee-urn, the combinationy of a receptacle lhaving a water-chamber therein, a coffee-jar inthe receptacle, a percolator comprising a Siphon connection from the waterchamber to the percolator, a discharge pipe connected to the lower end of the jai', a faucet to which the outer end of: said pipe `is connected, and an innerwall for the waterchamber spaced vand separated from said pipes .to permitthe removal of thej ar with the pipe thereon from the top of the rece. itacle. n n

2. ln a codec-urn, the combination of a receptacle having a Watenchambentherein, imi-.e1 Wall for the Water-chamber spaced u collee-jir in the receptacle, 2 percolator and separate from said. discharge pipes to (Aiomprising a Siphon connection from the permitthe removal ofthe jar conjointlywith 10 Water-chanf-ber to the percolator, a plurality said pipes.

of discharge pipes connected to the lower Signed at Chicago, Illinois, this 9 day of end of the jiu, faucets to which the outer July, 1923.

ends of said pipes are connected, and an v WILLIAM H. PETERSEN. 

